Letter opener



FIG. 1 is a perspective view of a letter opener showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof, the rear elevational view being identical;

FIG. 5 is an elevational view of the end of the letter opener without the recess; and,

FIG. 6 is an elevational view of the end of the letter opener with the recess. 

The ornamental design for a letter opener, as shown and described. 